package collection;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * 对Point集合排序
 */
public class SortPoint {
    public static void main(String[] args) {
        List<Point>list = new ArrayList<>();
        list.add(new Point(5,8));
        list.add(new Point(33,290));
        list.add(new Point(21,52));
        list.add(new Point(45,6));
        list.add(new Point(55,69));
        list.add(new Point(1,2));
        System.out.println("list原始数据："+list);

        Collections.sort(list,(o1,o2)->o1.getX()-o2.getX());  //按x坐标进行升序排列
                            //（o1,o2）->o2.getY()-o1.getY() ---按Y坐标进行降序排列
        System.out.println("list排序后数据"+list);  //[(1,2), (5,8), (21,52), (33,290), (45,6), (55,69)]
    }
}
